Part intended to be broadcast by son, for example (7)
I believe the answer is:
segment
'part' is the definition.
(segment is a kind of part)
'intended to be broadcast by son for example' is the wordplay.
'intended' becomes 'meant' (meaning is a kind of intending).
'to be broadcast' shows a homophone (sound like) (how the word might sound on the radio or TV).
'by' is a charade indicator (letters next to each other).
'son' becomes 's'.
'for example' becomes 'eg' ('e.g.' can be a synonym of 'for example').
'meant' sounds like 'ment'.
's'+'eg'='seg'
'ment' after 'seg' is 'SEGMENT'.
(Other definitions for segment that I've seen before include "Part separable from other parts, say of orange" , "Part, piece" , "Gets men with part cut off" , "Section of a circle" , "Piece of an orange" .)